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Make X16 work with both R38 and R39 type bank switching

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This commit is contained in:
Philip Zembrod 2021-04-11 00:44:22 +02:00
parent 663b1e16e1
commit fb100de9ed
1 changed files with 15 additions and 2 deletions
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17
6502/C64/src/vf-sys-x16.fth
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@ -18,8 +18,11 @@ include vf-lbls-cbm.fth
0381 >label CurFlg \ aka qtsw
0385 >label InsCnt \ aka insrt
09f60 >label RomBank
09f61 >label RamBank
\ TODO(issues/33): Remove the R?mBank38 labels.
09f60 >label RomBank38
09f61 >label RamBank38
1 >label RomBank
0 >label RamBank
0a000 >label KeyD \ keyboard buffer
0a00a >label Ndx \ #keys in keyboard buffer
@ -44,21 +47,29 @@ include vf-lbls-cbm.fth
Code c64key? ( -- flag)
RamBank ldx
\ TODO(issues/33): Remove the lines accessing RamBank38.
RamBank38 ldy
0 # lda RamBank sta
RamBank38 sta
Ndx lda
0<> ?[ 0FF # lda ]? pha
RamBank stx
RamBank38 sty
Push jmp end-code
Code getkey ( -- 8b)
RamBank lda N sta
\ TODO(issues/33): Remove the lines accessing RamBank38.
RamBank38 lda N 1+ sta
0 # lda RamBank sta
RamBank38 sta
Ndx lda 0<>
?[ sei KeyD ldy
[[ KeyD 1+ ,X lda KeyD ,X sta inx
Ndx cpx 0= ?]
Ndx dec
N lda RamBank sta
N 1+ lda RamBank38 sta
tya cli 0A0 # cmp
0= ?[ bl # lda ]?
]?
@ -113,6 +124,8 @@ Label restore pha txa pha tya pha cld
Label first-init
sei cld
RomBank lda $f8 # and RomBank sta \ map in KERNAL ROM
\ TODO(issues/33): Remove this line accessing RomBank38.
RomBank38 lda $f8 # and RomBank38 sta \ map in KERNAL ROM for R38
IOINIT jsr CINT jsr RESTOR jsr \ init. and set I/O-Vectors
ink-pot lda BrdCol sta \ border
ink-pot 1+ lda BkgCol sta \ backgrnd